hi, I made an animation with several timelines and I would like them to be reseted when clicking on a new timeline, I can see that the previous timelines are still displayed when I go to another one. thank you

The easiest way for a full reset is to simply jump to your current scene instantly.

Because you can run multiple timelines that are animating different properties, they don’t represent a specific state but instead can be thought of more as streams of animations. Thus you can’t really jump to time zero on a given timeline and have everything reset; it will only “rewind” for animations that are playing then. The alternative is to jump to time zero for every timeline you have, but at this point it is usually much easier to reload the scene.